… a header and footer table entry; affine transformations update

CHANGES:
1. Supports the enabling/disabling of layer property controls (greyed out if disabled)
2. Custom table view cells for header and footer added - view and number of layers
3. Affine transformations are now applied collectively, 3D transformation still require it to be centered at origin
4. Cosmetic updates and autolayout corrections - IslandWood autolayout still has some quirks (see CGRect- and CGPoint- cells)
5. All specialized layers extracted from external sources are marked as "not supported" even if render partially

Fixes microsoft#1598